.TH db.connect 1grass "" "GRASS 6.4.2" "Grass User's Manual"
.SH NAME
\fI\fBdb.connect\fR\fR  - Prints/sets general DB connection for current mapset and exits.
.SH KEYWORDS
database, attribute table, connection settings
.SH SYNOPSIS
\fBdb.connect\fR
.br
\fBdb.connect help\fR
.br
\fBdb.connect\fR [-\fBpc\fR]  [\fBdriver\fR=\fIname\fR]   [\fBdatabase\fR=\fIname\fR]   [\fBschema\fR=\fIstring\fR]   [\fBgroup\fR=\fIstring\fR]   [--\fBverbose\fR]  [--\fBquiet\fR] 
.SS Flags:
.IP "\fB-p\fR" 4m
.br
Print current connection parameters and exit
.IP "\fB-c\fR" 4m
.br
Check connection parameters, set if uninitialized, and exit
.IP "\fB--verbose\fR" 4m
.br
Verbose module output
.IP "\fB--quiet\fR" 4m
.br
Quiet module output
.PP
.SS Parameters:
.IP "\fBdriver\fR=\fIname\fR" 4m
.br
Driver name
.br
Options: \fIpg,dbf,ogr,odbc,mysql,sqlite\fR
.br
Default: \fIdbf\fR
.IP "\fBdatabase\fR=\fIname\fR" 4m
.br
Database name
.br
Default: \fI$GISDBASE/$LOCATION_NAME/$MAPSET/dbf/\fR
.IP "\fBschema\fR=\fIstring\fR" 4m
.br
Database schema
.br
Do not use this option if schemas are not supported by driver/database server
.IP "\fBgroup\fR=\fIstring\fR" 4m
.br
Default group of database users to which select privilege is granted
.PP
.SH DESCRIPTION
\fIdb.connect\fR allows the user to set database connection parameters.
These parameters are then taken as default values by modules so that the
user does not need to enter the parameters each time.
.SH NOTES
Values are stored in the mapset's VAR file;
the connection is not tested for validity.
.PP
The \fB-p\fR flag will display the current connection parameters. 
.PP
The \fB-c\fR flag will silently check if the connection parameters have
been set, and if not will set them to use GRASS's default values.
(useful in scripts before you attempt to create a new database table)
.PP
To connect a vector map to a database table, use \fIv.db.connect\fR
or \fIv.db.addtable\fR.
.SH EXAMPLES
.SS DBF
Local storage (the dbf/ subdirectory in the mapset must exist or must be
created by the user):
.br
\fC
.DS
.br
db.connect driver=dbf database='$GISDBASE/$LOCATION_NAME/$MAPSET/dbf/'
.br
db.tables -p
.br
.DE
\fR
.SS SQLite
Local storage:
.br
\fC
.DS
.br
db.connect driver=sqlite database='$GISDBASE/$LOCATION_NAME/$MAPSET/sqlite.db'
.br
db.connect -p
.br
db.tables -p
.br
.DE
\fR
.PP
The SQLite database is created automatically when used the first time.
.SS ODBC
Network storage: (may require the use of db.login):
.br
 
\fC
.DS
.br
db.connect driver=odbc database=gtest
.br
db.login user=myname [pass=secret]
.br
db.connect -p
.br
db.tables -p
.br
.DE
\fR
.SS PostgreSQL
Network storage: (may require the use of db.login):
.br
\fC
.DS
.br
db.connect driver=pg database="host=myserver.itc.it,dbname=mydb"
.br
db.login user=myname [pass=secret]
.br
db.connect -p
.br
db.tables -p
.br
.DE
\fR
.SS PostgreSQL with different port
Network storage: (may require the use of db.login):
.br
\fC
.DS
.br
db.connect driver=pg database="host=myserver.itc.it,dbname=mydb,port=6666"
.br
db.login user=myname [pass=secret]
.br
db.connect -p
.br
db.tables -p
.br
.DE
\fR
.SS MySQL (local)
Local storage (db.login may not be needed):
.br
\fC
.DS
.br
db.connect driver=mysql database=mydb
.br
db.login user=myname [pass=secret]
.br
db.connect -p
.br
db.tables -p
.br
.DE
\fR
.SS MySQL (external server)
Network storage: (may require the use of db.login):
.br
\fC
.DS
.br
db.connect driver=mysql database="host=myserver.itc.it,dbname=mydb"
.br
db.login user=myname [pass=secret]
.br
db.connect -p
.br
db.tables -p
.br
.DE
\fR
.SH SEE ALSO
\fI
db.columns,
db.drivers,
db.login,
db.tables,
v.db.addtable,
v.db.connect,
GRASS SQL interface\fR
.SH AUTHOR
Radim Blazek, ITC-Irst, Trento, Italy
.PP
\fILast changed: $Date: 2011-11-08 10:42:51 +0100 (Tue, 08 Nov 2011) $\fR
.PP
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.PP
© 2003-2011 GRASS Development Team